This book is aimed at children who have finished Kindergarten and are preparing for Elementary School. It is dedicated to Mathematics and its goal is to recap the children's related knowledge in a fun and creative way, in order to make their transition to the next level of education smoother. It contains exercises for mental readiness and logic, based on the knowledge and experiences that children have already acquired in Mathematics during Preschool Education. It also includes exercises with puzzles, codes, and brainteasers that align with the skills of children at this age. Additionally, it encourages children to use their knowledge of Mathematics more combinatively and creatively. Based on the Curriculum for Preschool Education